Related Experiment Video
Updated: Jul 4, 2025
Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients
Published on: June 17, 2019
Eye Tracking in MEG
Veli-Matti Saarinen1, Veikko Jousmäki2
1Aalto NeuroImaging, Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland. veli-matti.saarinen@aalto.fi.
Abstract:
Magnetoencephalography (MEG) can measure brain activity in ms-level temporal resolution. MEG sensors are super sensitive devices for magnetic signals of the brain but are also prone to electromagnetic interferences. The MEG device is located inside the magnetically shielded room (MSR), and any monitoring device used inside the MSR requires special shielding and its location must be carefully selected to suppress electromagnetic interference. Eye-tracker measures eye movements, providing spatial location of the gaze, pupil diameters, and eye blinks. Eye tracking in MEG enables, for example, categorization of the MEG data based on gaze position and interactive stimulus using gaze position. Combining the methods together will require considering the electromagnetic interference for the MEG-that is, additional shielding, positioning of the eye tracker, and subject-specific issues related to make-up and eye-corrective lenses.
